It warms and cools. They have been caught manipulating the data several times, but you still trust the scientists who get their funding from corrupt governments, who use the fantasy of climate change to increase their power, which you are against. See the problem yet? Who sets the "maximum allowable limit" and what is it based on? 2 degrees C really isn't that much, barely noticeable. There is no way that life could currently be existing on this planet if something as little as a 2 degrees Celsius increase in average temperature could disrupt the natural balance so much as to cause mass extinction. In fact, the time period during which the most new species supposedly appear in the fossil records was much hotter than what we see today. And CO2 levels have been more than 10x higher than they are now, without cataclysm. You guys need to roll back the alarmism, and stop participating in the concentration of power.